It all depends what you call streetable or street friendly, some its a full race car with plates. Me anything NA over 1.2 hp per cid is street strip territory, anything under 0.9 hp per cid is super street friendly, 0.9-1 is muscle car level and 1-1.1 is a hot street engine. So 1:1 is a decent compromise.
So where is street friendly for you HP:CID ?
* Above 0.9:1 gears and stall become more and more important especially over 1.1:1.